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UBSEC(4) Device Drivers Manual UBSEC(4)

ubsecBroadcom and BlueSteel uBsec 5x0x crypto accelerator

ubsec* at pci?

The ubsec driver supports cards containing any of the following chips:

Bluesteel 5501
The original chipset, no longer made. This extremely rare unit was not very fast, lacked an RNG, and had a number of other bugs.
Bluesteel 5601
A faster and fixed version of the original, with a random number unit and large number engine added.
Broadcom BCM5801
A BCM5805 without public key engine or random number generator.
Broadcom BCM5802
A slower version of the BCM5805.
Broadcom BCM5805
Faster version of Bluesteel 5601.
Broadcom BCM5820
64 bit version of the chip, and significantly more advanced.
Broadcom BCM5821
Faster version of the BCM5820. This is the chip found on the Sun Crypto Accelerator 1000.
Broadcom BCM5822
Faster version of the BCM5820.
Broadcom BCM5823
Faster version of the BCM5822 that also supports AES.
Broadcom BCM5825
Faster PCI Express or PCI-X version of the chip.
Broadcom BCM5860
IPSec/SSL Security Processor that is faster and has more features.
Broadcom BCM5861
Faster version of the BCM5860.
Broadcom BCM5862
Faster version of the BCM5861.

The ubsec driver registers itself to accelerate DES, Triple-DES, MD5-HMAC, and SHA1-HMAC operations for ipsec(4) and crypto(4). The driver also supports acceleration of AES-CBC with the BCM5823 or newer.

On those models which contain a public key engine (almost all of the more recent ones), this feature is registered with the crypto(4) subsystem.

On all models except the Bluesteel 5501 and Broadcom 5801, the driver registers itself to provide random data to the random(4) subsystem.

crypt(3), crypto(4), intro(4), ipsec(4), pci(4), random(4), crypto(9)

The ubsec device driver appeared in OpenBSD 2.8.

The BCM5801 and BCM5802 have not actually been tested. Also, some of the newer chips support AES-CTR (AES Counter Mode) but it is not supported by the driver. The advanced SSL/TLS acceleration features of the BCM5860 or newer are not supported by the driver and the crypto(4) subsystem.

March 27, 2009 OpenBSD-5.5